JP3264073B2 - Neutral paper for stainless steel plate - Google Patents
Neutral paper for stainless steel plateInfo
- Publication number
- JP3264073B2 JP3264073B2 JP00495094A JP495094A JP3264073B2 JP 3264073 B2 JP3264073 B2 JP 3264073B2 JP 00495094 A JP00495094 A JP 00495094A JP 495094 A JP495094 A JP 495094A JP 3264073 B2 JP3264073 B2 JP 3264073B2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- stainless steel
- steel plate
- neutral
- pva
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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- Winding, Rewinding, Material Storage Devices (AREA)
- Paper (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、優れた耐熱性と表面強
度を有し、焼付きと押込み傷の発生が少ないステンレス
板用中性合紙に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a neutral slip paper for a stainless steel plate having excellent heat resistance and surface strength, and having little seizure and indentation scratches.
【０００２】[0002]
【従来の技術】ステンレス板は、その製造工程において
最終工程に近づく程その表面はきれいに仕上げられてく
るが、ステンレス板をコイル状に巻き取って次の工程に
移行する際、ステンレス板の表面同士が擦れ合い、表面
にさまざまな形の傷が発生し商品価値を台無しにすると
いう問題がある。2. Description of the Related Art The surface of a stainless steel plate is finished finer as it approaches the final process in the manufacturing process. However, when the stainless steel plate is wound into a coil and the process proceeds to the next step, the surfaces of the stainless steel plate are brought together. Are rubbed against each other, causing various types of scratches on the surface, which spoils commercial value.
【０００３】そのため、ステンレス板を前記の製造工程
においてさまざまな処理を施すため或る工程から次の工
程へ移行させる際、ステンレス板をコイル状の巻取りと
する段階で、従来からクラフトパルプを原料として抄紙
機で製造された中性のクラフト紙が合紙として保護シー
トの役目を果たすべくステンレス板を巻き取ると同時に
一緒に挿入され、その後一時的に保管されたり、或いは
直ちに次の工程に移され、その工程で目的の処理が始ま
る前に合紙のみが抜き取られるという方法が採用されて
いる。[0003] Therefore, when the stainless steel plate is shifted from one process to the next process in order to perform various treatments in the above-described manufacturing process, the kraft pulp has been conventionally used as a raw material at the stage of coiling the stainless steel plate. Neutral kraft paper produced by a paper machine is wound together with a stainless steel plate to serve as a protective sheet as a slip sheet and inserted together with the stainless steel sheet, and then temporarily stored or immediately moved to the next step. In this process, a method is adopted in which only the slip sheet is extracted before a target process is started.
【０００４】一方、ステンレス板用中性合紙は、ステン
レスを圧延する工程で高い温度（例えば、１００〜２０
０℃）を有するステンレスの間に挿入されて用いられる
ので耐熱性が要求される。紙を構成するパルプは１７０
〜１８０℃でパルプ中のセルロースから水が離脱し、結
合が破壊されるためぼろぼろになり、強度的に全く用を
なさなくなるので、なんらかの耐熱性を紙に付与させる
必要がある。On the other hand, neutral interleaf paper for a stainless steel plate has a high temperature (for example, 100 to 20) in a step of rolling stainless steel.
(0 ° C.), so that heat resistance is required. The pulp that makes up the paper is 170
At temperatures of up to 180 ° C., water is released from the cellulose in the pulp, and the bond is broken, resulting in raggedness and no use in terms of strength. Therefore, it is necessary to impart some heat resistance to the paper.
【０００５】特開昭５６−１３１０１１号公報には、ク
ラフトパルプを原料とする中性紙の抄紙工程中にジシア
ンジアミド又はその誘導体を１種以上、好ましくは更に
帯電防止剤を追加して、浸漬法、サイズプレス法、スプ
レー方式、コーティング方式で含有させて製造された合
紙でステンレス板を圧延や調質した後の帯熱している板
面を覆う方法が開示されている。サイズプレス法でジシ
アンジアミド又はその誘導体を中性紙に含ませる場合、
例えばＰＶＡ、酸化澱粉、パラフィンワックス等を含む
通常のサイズプレス加工液中にジシアンジアミドを溶解
して用いられる。この方法は、前記の化学物質を合紙に
含有させ、その合紙でステンレス板の表面を覆うことに
よって、合紙には耐熱性と静電気の発生を抑制する性質
を付与できるので、作業中に熱劣化による合紙の切断が
なく、又そのような合紙を用いることによりステンレス
板同士が接触することがないようにするので板面の傷や
曇り及び静電気も発生せず、作業効率を向上させること
ができ、更に合紙の反復使用回数も増すというものであ
る。Japanese Patent Application Laid-Open No. 56-131011 discloses a dipping method in which one or more dicyandiamide or a derivative thereof, preferably an antistatic agent is further added during the papermaking process of neutral paper using kraft pulp as a raw material. A method is disclosed in which a stainless steel plate is rolled or tempered with a slip sheet manufactured by being incorporated by a size press method, a spray method, or a coating method, and then covering the heated surface of the plate. When dicyandiamide or its derivative is contained in neutral paper by the size press method,
For example, dicyandiamide is used by dissolving it in a normal size press working solution containing PVA, oxidized starch, paraffin wax and the like. According to this method, by inserting the above-mentioned chemical substance into interleaving paper and covering the surface of the stainless steel plate with the interleaving paper, the interleaving paper can be provided with heat resistance and a property of suppressing generation of static electricity. There is no cutting of the interleaving paper due to thermal deterioration, and the use of such interleaving paper prevents the stainless steel plates from coming into contact with each other. It is possible to increase the number of times the slip sheet is repeatedly used.
【０００６】特開昭５９−８９０００号公報には、紙力
増強剤として広く用いられているものの中でポリアクリ
ルアミド系、尿素系樹脂及びメラミン系樹脂よりなる合
成樹脂のいずれか一種を対パルプ０．５〜５．０重量％
の量で添加し、或いは前記に加えて合成樹脂量の５０〜
１００重量％の量のジシアンジアミドを添加すると、合
紙に耐熱性を付与することができるので、高い温度及び
高い圧力の下でも焼付きが発生せず、ひいてはステンレ
ス板の表面に曇りや肌荒れが発生することを防ぐことが
できるというものである。前記の樹脂は、ビーターに添
加する方法、抄紙後の紙にスプレー若しくは含浸させる
方法、又はサイズプレスで添加する方法或いはコーター
で塗工する方法が適用されている。Japanese Patent Application Laid-Open No. 59-89000 discloses that one of polyacrylamide-based, urea-based and melamine-based synthetic resins among those widely used as a paper-strengthening agent is used with respect to pulp. 0.5-5.0% by weight
Or the amount of synthetic resin in addition to the above
By adding 100% by weight of dicyandiamide, heat resistance can be imparted to the slip sheet, so that seizure does not occur even under high temperature and high pressure, and consequently, the surface of the stainless steel plate becomes cloudy or rough. It is possible to prevent that. The method of adding the resin to a beater, the method of spraying or impregnating the paper after papermaking, the method of adding it with a size press, or the method of applying it with a coater is applied.
【０００７】しかしながら、前記の化合物を含む紙の表
面強度は弱く、しかもそのような化合物を多量に紙に添
加すると熱により劣化した樹脂が紙表面より剥がれ落ち
てステンレス表面に焼付きと押込み（こすれ）傷が発生
し、新たな問題を生じている。ステンレス板の表面に生
じる傷としては、他にも紙に含有される結束繊維、樹脂
等の異物に原因するものがあり、それ故ステンレス板用
中性合紙としては、これらの異物の含有率が少ない紙で
あると共に、塩素イオン、硫酸イオン等の腐食性を示す
物質の含有率も少ない紙が求められている。However, the surface strength of paper containing the above compounds is low, and when such compounds are added in a large amount to paper, the resin which has deteriorated due to heat is peeled off from the paper surface and seized and pushed into the stainless steel surface. ) Scratches have created new problems. Other scratches that occur on the surface of the stainless steel plate include those caused by foreign matters such as binding fibers and resin contained in the paper. There is a need for a paper that has a low content of corrosive substances such as chloride ions and sulfate ions, as well as a paper having a small amount of water.
【０００８】紙の表面強度を高める方法としては、各種
の澱粉のような紙力増強剤を２本ロールサイズプレス、
ゲートロールコーター等の塗布設備を用いて紙に多く
（０．７〜２．０ｇ／ｍ2）塗布する方法が周知である
が、この方法により得られる中性合紙は、表面強度は優
れるが、使用に際して、前記した如く、ステンレス板の
表面で焼付きを生じ、実用に供することができないとい
う問題がある。従って、ステンレス板用中性合紙では、
前記の異物及びイオンの含有率が少ないことは勿論、表
面強度が強く、しかもその表面が耐熱性を示し、且つ焼
付きと押込み傷の発生を生じ難いものが強く求められて
いるが、そのような中性合紙は得られていないのが現状
である。[0008] As a method of increasing the surface strength of paper, a paper-strength enhancer such as various types of starch is used in a two-roll size press,
Although a method of applying a large amount (0.7 to 2.0 g / m 2 ) to paper using a coating apparatus such as a gate roll coater is well known, the neutral interleaf paper obtained by this method has excellent surface strength. In use, as described above, there is a problem that seizure occurs on the surface of the stainless steel plate and it cannot be put to practical use. Therefore, in neutral slip paper for stainless steel plates,
Of course, those having low content of foreign substances and ions, high surface strength, and exhibiting heat resistance on the surface, and hardly causing seizure and indentation scratches are strongly demanded. At present, no neutral neutral paper has been obtained.
【０００９】[0009]
【発明が解決しようとする課題】本発明者等は、かかる
現状に鑑み、未晒クラフトパルプを原料とするステンレ
ス板用中性合紙の表面強度と耐熱性について鋭意研究し
た結果、ポリビニルアルコールの熱安定性が澱粉より優
れるということ及び前記ポリビニルアルコールを紙の表
面に多く留めておくことより紙層に浸透させることの方
が表面強度と耐熱性の両方に対し極めて有効であるとい
うことに着眼し、２本ロールサイズプレスを用いて前記
ポリビニルアルコールを特定の範囲の量だけ紙の表面に
塗布して含有させると、得られる中性合紙は表面強度に
優れ、且つ同時に高い温度での焼付きと押込み傷が少な
いということを見出だし本発明を完成するに至った。本
発明の目的は、優れた表面強度と耐熱性を有し、焼付き
と押込み傷の発生が少ないステンレス板用中性合紙を提
供することにある。In view of such circumstances, the present inventors have conducted intensive studies on the surface strength and heat resistance of neutral slip paper for stainless steel sheets made from unbleached kraft pulp, and as a result, polyvinyl alcohol Focus on the fact that thermal stability is superior to starch and that penetrating the paper layer is much more effective for both surface strength and heat resistance than retaining more of the polyvinyl alcohol on the paper surface. When the polyvinyl alcohol is applied to the surface of the paper in a specific range and contained using a two-roll size press, the resulting neutral interleaving paper has excellent surface strength and is simultaneously fired at a high temperature. It has been found that there are few sticking and indentation scratches, and the present invention has been completed. An object of the present invention is to provide a neutral interleaf paper for a stainless steel plate having excellent surface strength and heat resistance and less occurrence of seizure and indentation scratches.
【００１０】[0010]
【課題を解決するための手段】本発明は、クラフトパル
プを原料として抄紙されたクラフト紙からなるステンレ
ス板用中性合紙において、該クラフト紙がポリビニルア
ルコールを二本ロールサイズプレスにより塗布されて絶
乾紙重量当り０．１３〜０．５７ｇ／ｍ2含有すること
を特徴とするステンレス板用中性合紙である。SUMMARY OF THE INVENTION The present invention relates to a neutral interleaf paper for a stainless steel plate made of kraft paper made from kraft pulp, wherein the kraft paper is coated with polyvinyl alcohol by a two-roll size press. It is a neutral interleaf paper for a stainless plate, characterized by containing 0.13 to 0.57 g / m 2 per absolute dry paper weight.
【００１１】本発明に係わるステンレス板用中性合紙
は、針葉樹及び広葉樹木材からのクラフトパルプを原料
として公知の湿式抄紙機において抄造されたクラフト紙
にポリビニルアルコール（以下ＰＶＡという）を前記の
範囲の量だけ２本ロールサイズプレスにより塗布して含
有させて得られる。本発明に用いられる原紙は、クラフ
トパルプを精選工程及び抄紙工程において公知のスリッ
トスクリーン、セントリークリーナー等のスクリーンを
用いて結束繊維、樹脂（ピッチ）、砂等の異物を十分除
去し、水洗浄を十分施して得られるパルプを原料として
抄造されたクラフト紙が用いられる。The neutral interleaf paper for a stainless steel plate according to the present invention is characterized in that kraft pulp made of softwood and hardwood is used as a raw material, and polyvinyl alcohol (hereinafter referred to as PVA) is added to kraft paper made by a known wet paper machine. By a two-roll size press. In the base paper used in the present invention, kraft pulp is sufficiently cleaned of foreign matter such as binding fibers, resin (pitch), and sand using a screen such as a slit screen or a sentry cleaner in a fine selection step and a paper making step, and washed with water. Kraft paper made from pulp obtained by performing sufficient application is used.
【００１２】本発明で用いられるＰＶＡは、部分けん化
及び完全けん化されたものであり、二本ロールによるサ
イズプレスでの塗布が公知の方法で好適に施される。従
来から二本ロールサイズプレスにより澱粉を塗布するこ
とは広く実施されているが、澱粉を用いた場合は、含有
量を０．５０ｇ／ｍ2以上の如く多くしないと表面強度
の改善が得られず、そうすると澱粉が熱分解して、ステ
ンレス板の表面で焼付きを発生するので適さない。一
方、熱安定性の高いＰＶＡであっても、ゲートロールコ
ーターのように紙表面の表層に塗布膜を形成する塗布の
方法では、塗布量が多い場合は勿論、塗布量が０．６ｇ
／ｍ2未満の如く少ない場合であってもＰＶＡが焼付
き、ステンレス板の表面を汚すので適さない。更に、塗
布量が少な過ぎて紙表面が塗布膜で覆われない場合は、
どのような塗布の方法を応用しても紙の表面強度を高め
ることはできず、紙表面から繊維が脱落してステンレス
板の表面に押込み傷を生じるので、合紙としては適さな
い。The PVA used in the present invention is partially saponified and completely saponified, and is preferably applied by a known method using a two-roll size press. Conventionally, starch has been widely applied by a two-roll size press, but when starch is used, the surface strength can be improved unless the content is increased as much as 0.50 g / m 2 or more. In that case, the starch is thermally decomposed and seizure occurs on the surface of the stainless steel plate, which is not suitable. On the other hand, even in the case of PVA having high thermal stability, the coating method of forming a coating film on the surface layer of the paper surface such as a gate roll coater has a coating amount of 0.6 g as well as a large coating amount.
Even when the amount is as small as less than / m 2, PVA is not suitable because it seizes and stains the surface of the stainless steel plate. Furthermore, when the paper surface is not covered with the coating film because the coating amount is too small,
No matter how the coating method is applied, the surface strength of the paper cannot be increased, and the fibers fall off from the paper surface to cause indentation scratches on the surface of the stainless steel plate, which is not suitable as slip paper.
【００１３】これに対し、本発明の中性合紙はＰＶＡが
二本ロールサイズプレスにより塗布されて紙当りＰＶＡ
が０．１３〜０．５７ｇ／ｍ2含有してなる。しかしな
がら、二本ロールサイズプレスによる塗布の場合でも、
ＰＶＡの含有量が０．１３ｇ／ｍ2未満では前記した如
く紙表面を塗布膜で覆うことができず、表面強度が悪く
なって繊維の脱落が生じ、ステンレス板の表面に押込み
傷を発生させ、又含有量が０．５７ｇ／ｍ2を超えて多
くなるとＰＶＡの焼付きが発生するのでステンレス板用
中性合紙としては適さない。On the other hand, the neutral interleaf paper of the present invention is applied with PVA by a two-roll size press, and the PVA per paper is applied.
Of 0.13 to 0.57 g / m 2 . However, even in the case of application by a two-roll size press,
When the content of PVA is less than 0.13 g / m 2 , the paper surface cannot be covered with the coating film as described above, the surface strength is deteriorated, the fibers fall off, and indentation scratches are generated on the surface of the stainless steel plate. On the other hand, if the content exceeds 0.57 g / m 2 , seizure of PVA occurs, so that it is not suitable as neutral slip paper for stainless steel plates.
【００１４】本発明の中性合紙が押込み傷と焼付きを発
生せず、ステンレス板の表面を保護できる理由は、推定
の域をでないが、二本ロールサイズプレスを適用するこ
とによりゲートロールコーターの場合と比べてＰＶＡが
紙層内部によりよく浸透し易いことと、ＰＶＡは、澱粉
のような環状化合物と異なり直鎖状化合物であり、澱粉
より一層紙層内部に浸透し易いこととが相俟って、澱粉
を用いる場合と異なり少ない含有量で紙表面強度の向上
を発現させることができる。更に、ＰＶＡは熱安定性が
澱粉より優れていることもあって、これらの相乗効果に
よりＰＶＡを二本ロールサイズプレスで紙に塗布する
と、極めて少ない範囲の含有量で紙に表面強度と耐熱性
をバランス良く付与させることができ、その結果ステン
レス板表面での押込み傷と焼付きの発生防止を同時に達
成させることができるからであると考えられる。The reason why the neutral slip sheet of the present invention does not cause indentation scratches and seizure and can protect the surface of the stainless steel plate is not limited to the presumed range. Compared to the case of the coater, the fact that PVA easily penetrates into the paper layer better, and that PVA is a linear compound unlike a cyclic compound such as starch, and more easily permeates into the paper layer than starch. Also, unlike the case where starch is used, the paper surface strength can be improved with a small content. Furthermore, because PVA has better thermal stability than starch, when PVA is applied to paper by a two-roll size press due to these synergistic effects, the surface strength and heat resistance of the paper are extremely low in the content. This is considered to be because it is possible to simultaneously achieve prevention of indentation scratches and seizure on the surface of the stainless steel plate.
【００１５】[0015]
【実施例】以下に実施例を挙げて本発明をより具体的に
説明するが、本発明は、勿論これらに限定されるもので
はない。なお、実施例及び比較例における％はすべて重
量％を示す。EXAMPLES The present invention will be described more specifically with reference to the following examples, but the present invention is of course not limited thereto. In addition, all% in an Example and a comparative example show weight%.
【００１６】実施例１ 公知のクラフト蒸解法によりカッパー価が３４の針葉樹
未晒クラフトパルプを製造し、０．２ｍｍ幅のスリット
スクリーン及び６０８型セントリークリーナーで精選し
た後、この原料をダブルディスクレファイナーでフリー
ネス４２０ｍｌ迄叩解し、次いで中性サイズ剤（バソプ
ラスト２６５Ｄ、ＢＡＳＦ社製）を対パルプ０．２５％
添加し、二本ロールサイズプレスを備えた抄紙機で硫酸
バンドを使用せずに坪量４２ｇ／ｍ2の中性合紙を製造
した。サイズプレス液としてはＰＶＡ（完全けん化型、
商品名：７００４、日本合成化学工業社製）の固形分濃
度１％水溶液を用い、ＰＶＡの含有量が０．１５ｇ／ｍ
2となるように塗布し、アフタードライヤーで乾燥して
水分含有率を４．５％とした。EXAMPLE 1 A softwood unbleached kraft pulp having a kappa number of 34 was produced by a known kraft cooking method, and was carefully selected with a slit screen having a width of 0.2 mm and a 608 type Sentry cleaner. To a freeness of 420 ml, and then add a neutral sizing agent (Vasoplast 265D, manufactured by BASF) to 0.25% of pulp.
It was added to a paper machine equipped with a two-roll size press to produce a neutral interleaf paper having a basis weight of 42 g / m 2 without using a sulfuric acid band. PVA (completely saponified,
(Trade name: 7004, manufactured by Nippon Synthetic Chemical Industry Co., Ltd.) with a 1% solids concentration aqueous solution and a PVA content of 0.15 g / m.
2 and dried with an after-dryer to adjust the water content to 4.5%.
【００１７】実施例２ ＰＶＡの含有量が０．３０ｇ／ｍ2となるように塗布し
た以外は、実施例１と同様にして中性合紙を製造した。Example 2 Neutral slip paper was manufactured in the same manner as in Example 1 except that the coating was performed so that the content of PVA was 0.30 g / m 2 .
【００１８】実施例３ ＰＶＡの含有量が０．５５ｇ／ｍ2となるように塗布し
た以外は、実施例１と同様にして中性合紙を製造した。Example 3 Neutral slip paper was manufactured in the same manner as in Example 1 except that the coating was performed so that the PVA content was 0.55 g / m 2 .
【００１９】比較例１ ＰＶＡを塗布しないこと以外は、実施例１と同様にして
中性合紙を製造した。Comparative Example 1 Neutral interleaf paper was produced in the same manner as in Example 1 except that no PVA was applied.
【００２０】比較例２ ＰＶＡの含有量が０．１０ｇ／ｍ2となるように塗布し
た以外は、実施例１と同様にして中性合紙を製造した。Comparative Example 2 Neutral slip paper was produced in the same manner as in Example 1 except that the coating was performed so that the content of PVA was 0.10 g / m 2 .
【００２１】比較例３ ＰＶＡの含有量が０．６０ｇ／ｍ2となるように塗布し
た以外は、実施例１と同様にして中性合紙を製造した。Comparative Example 3 Neutral slip paper was produced in the same manner as in Example 1 except that the coating was performed so that the PVA content was 0.60 g / m 2 .
【００２２】比較例４ ＰＶＡの代わりに澱粉（商品名：王子エースＡ、王子コ
ンスターチ社製）を固形分濃度２％で用い、含有量が
０．３０ｇ／ｍ2となるように塗布した以外は、実施例
１と同様にして中性合紙を製造した。Comparative Example 4 A starch (trade name: Oji Ace A, manufactured by Oji Constarch Co., Ltd.) was used in place of PVA at a solid concentration of 2%, and the coating was performed so that the content was 0.30 g / m 2. In the same manner as in Example 1, neutral slip paper was manufactured.
【００２３】比較例５ 澱粉の含有量が０．５０ｇ／ｍ2となるように塗布した
以外は、比較例４と同様にして中性合紙を製造した。Comparative Example 5 A neutral slip paper was produced in the same manner as in Comparative Example 4 except that the starch was applied so that the starch content was 0.50 g / m 2 .
【００２４】比較例６ 澱粉の含有量が０．８０ｇ／ｍ2となるように塗布した
以外は、比較例４と同様にして中性合紙を製造した。Comparative Example 6 Neutral interleaf paper was produced in the same manner as in Comparative Example 4, except that the starch was applied so that the starch content was 0.80 g / m 2 .
【００２５】比較例７ 澱粉の含有量が１．００ｇ／ｍ2となるように塗布した
以外は、比較例４と同様にして中性合紙を製造した。Comparative Example 7 Neutral slip paper was produced in the same manner as in Comparative Example 4 except that the starch was applied so that the starch content was 1.00 g / m 2 .
【００２６】実施例及び比較例で得られた中性合紙の評
価を次の試験で得られた結果に基づいて行ない、表１に
示した。試験法 （１）焼付き １５０ｍｍ×１５０ｍｍの大きさに裁断した中性合紙を
５枚用意し、それぞれの中性合紙を圧延油（鉱物油）に
浸漬して濾紙で余分の油を拭き取った後２枚のステンレ
ス板（ＳＵＳ３０４ ２Ｂ、大きさ２００ｍｍ×２００
ｍｍ、厚み０．５ｍｍ、表面をクレンザーで磨いたも
の）に挟んで実験用５０トン油圧プレスにおいて、温度
１８０℃及び圧力１３３ｋｇ／ｃｍ2（紙の単位面積当
りゲージ圧）で３時間保持し、その後プレス機から取出
し、放置冷却後ステンレス板の表面の変化を観察した。
ステンレス板の表面に焼付きが発生している場合は、そ
の部分をゼロックスコピー機で複写し、複写した紙でプ
ラニメーター（商品名：ｐｌａｎｉｘ７、タマヤ計測シ
ステム社製）を用いて焼付け面積率（用いた中性合紙の
全面積に対する割合、％）を求め、５枚のサンプルから
得られた結果の平均値（四捨五入）を求めた。試験で得
られた焼付き面積率は、１０％未満であれば実用しても
ステンレス板表面に焼付きが発生しないので良好○と
し、面積率が１０％以上であれば焼付きが発生するので
不可×と評価した。The neutral slip sheets obtained in Examples and Comparative Examples were evaluated based on the results obtained in the following tests, and are shown in Table 1. Test method (1) Five neutral slip papers cut into a size of 150 mm x 150 mm were prepared, and each neutral slip paper was immersed in rolling oil (mineral oil) and excess oil was wiped off with filter paper. After that, two stainless plates (SUS304 2B, size 200 mm x 200
mm, thickness 0.5 mm, the surface of which was polished with a cleanser), and kept at a temperature of 180 ° C. and a pressure of 133 kg / cm 2 (gauge pressure per unit area of paper) for 3 hours in a 50-ton hydraulic press for experiments. Thereafter, the stainless steel plate was taken out of the press machine, left to cool, and observed for changes in the surface of the stainless steel plate.
When the surface of the stainless steel plate is burned, the portion is copied with a Xerox copier, and the copied paper is used as a printing area ratio with a planimeter (trade name: planix7, manufactured by Tamaya Measurement Systems Co., Ltd.). The ratio (%, relative to the total area of the neutral slip paper) was determined, and the average value (rounded) of the results obtained from the five samples was determined. If the seizure area ratio obtained in the test is less than 10%, there is no seizure on the surface of the stainless steel plate even if it is practically used, so it is evaluated as good. If the area ratio is 10% or more, seizure occurs. Not possible x was evaluated.
【００２７】（２）表面強度 1)ワックスピック試験 ＪＩＳ Ｐ ８１２９により測定した。番号の高いもの
ほど、表面強度が高い指標となるが、番号が１５Ａ以上
は良好○、１５Ａ未満を不可×とした。2)印刷試験 ソルナ１２５印刷機（ガデリウス社製）及びインキタッ
ク１５のインキを用いて５１５ｍｍ×３６５ｍｍに断裁
した中性合紙を５０００枚／時で１０００枚印刷後、ブ
ランケットに付着している繊維を透明な粘着セロファン
テープで採取し、このテープをビニールシートに貼り、
実体顕微鏡（６．７〜４０倍、オリンパス社製）で個数
を測定する。個数は、１６以下であれば脱落物によるス
テンレス表面への押込み傷の発生がないので良好○、１
６を超えるものは、押込み傷が発生する恐れがあるので
不可×と評価した。 (2) Surface strength 1) Wax pick test Measured according to JIS P 8129. The higher the number, the higher the index of the surface strength. 2) Printing test Solna 125 printing machine (manufactured by Gadelius) and neutral adhesion paper cut to 515 mm x 365 mm using the ink of Ink Tack 15 are printed at 5,000 sheets / hour at 1,000 sheets / hour, and then the fibers adhering to the blanket are printed. With a transparent adhesive cellophane tape, stick this tape on a vinyl sheet,
The number is measured with a stereoscopic microscope (6.7 to 40 times, manufactured by Olympus Corporation). If the number is 16 or less, there is no occurrence of indentation scratches on the stainless steel surface due to fallouts.
A sample exceeding 6 was evaluated as unacceptable because of the possibility of indentation scratches.
【００２８】[0028]
【表１】 [Table 1]
【００２９】表１から明らかな如く、本発明のステンレ
ス板用中性合紙はステンレス板表面に焼付き現象を殆ど
生ぜず、表面強度も強いので繊維の脱落による押込み傷
も発生しない（実施例１〜３）。これに対しＰＶＡの含
有量が少ないか或いはＰＶＡを全く含有しない場合は、
焼付きは殆ど発生しないが、表面強度が悪く、繊維の脱
落による押込み傷の発生が予測されるので実用に適さな
い（比較例１及び２）。ＰＶＡの含有量が多いと表面強
度は強くなり、押込み傷の発生はないが、焼付きが発生
する恐れがある（比較例３）。一方、澱粉を塗布した場
合は、含有量が少ないと焼付きは発生しないが、表面強
度が不足して押込み傷が発生する恐れがあり（比較例
４）、澱粉の含有量が０．５０ｇ／ｍ2を超えて多くな
ると、表面強度は強くなるが、澱粉の焼付きがステンレ
ス板表面で発生するので不適である（比較例５〜７）。As is clear from Table 1, the neutral slip paper for a stainless steel plate of the present invention hardly causes seizure on the surface of the stainless steel plate, and has a high surface strength, so that no indentation damage is caused by falling off of the fiber (Example 1). ~ 3). On the other hand, when the content of PVA is small or contains no PVA,
Although seizure hardly occurs, it is not suitable for practical use because surface strength is poor and occurrence of indentation damage due to falling off of fibers is predicted (Comparative Examples 1 and 2). When the content of PVA is large, the surface strength is increased and there is no indentation scratch, but there is a possibility that seizure may occur (Comparative Example 3). On the other hand, when starch is applied, seizure does not occur if the content is low, but there is a possibility that indentation may occur due to insufficient surface strength (Comparative Example 4), and the starch content is 0.50 g / When it exceeds m 2 , the surface strength is increased, but the seizure of the starch occurs on the stainless steel plate surface, which is not suitable (Comparative Examples 5 to 7).
【００３０】[0030]
【発明の効果】以上説明したように、本発明に係わるス
テンレス板用中性合紙は、ＰＶＡを０．１３〜０．５７
ｇ／ｍ2という特定量を２本ロールサイズプレスで紙に
含有させている。従って、本発明は、使用に際して紙の
表面強度が高く、紙表面からの繊維の脱落がないのでス
テンレス板の表面に押込み（こすれ）傷が発生させず、
しかも用いたＰＶＡは紙層に浸透しているのでステンレ
ス板の表面での焼付きも発生しないステンレス板用中性
合紙を提供するという効果を奏する。As described above, the neutral slip paper for a stainless steel plate according to the present invention has a PVA of 0.13 to 0.57.
A specific amount of g / m 2 is contained in the paper by a two-roll size press. Therefore, according to the present invention, when used, the surface strength of the paper is high, and the fibers do not fall off from the paper surface, so that the surface of the stainless steel plate is not indented (rubbed) and the scratch is not generated.
In addition, since the used PVA has penetrated into the paper layer, there is an effect of providing a neutral interleaf paper for a stainless steel plate which does not cause seizure on the surface of the stainless steel plate.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) D21H 19/20 B21C 47/26 D21H 11/04 D21H 27/22 ──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. 7 , DB name) D21H 19/20 B21C 47/26 D21H 11/04 D21H 27/22
Claims (1)
クラフト紙からなるステンレス板用中性合紙において、
該クラフト紙がポリビニルアルコールを二本ロールサイ
ズプレスにより塗布されて絶乾紙重量当り０．１３〜
０．５７ｇ／ｍ2含有することを特徴とするステンレス
板用中性合紙。1. A neutral interleaf paper for a stainless plate made of kraft paper made from kraft pulp,
The kraft paper is coated with polyvinyl alcohol by a two-roll size press to obtain 0.13-
A neutral interleaf paper for a stainless steel plate, comprising 0.57 g / m 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00495094A JP3264073B2 (en) | 1994-01-21 | 1994-01-21 | Neutral paper for stainless steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00495094A JP3264073B2 (en) | 1994-01-21 | 1994-01-21 | Neutral paper for stainless steel plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07216794A JPH07216794A (en) | 1995-08-15 |
| JP3264073B2 true JP3264073B2 (en) | 2002-03-11 |
Family
ID=11597859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP00495094A Expired - Lifetime JP3264073B2 (en) | 1994-01-21 | 1994-01-21 | Neutral paper for stainless steel plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3264073B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003320764A (en) | 2002-02-27 | 2003-11-11 | Tokushu Paper Mfg Co Ltd | Slip sheet for lithographic printing plate and method for manufacturing it |
| JP2009023354A (en) * | 2002-02-27 | 2009-02-05 | Tokushu Paper Mfg Co Ltd | Slip sheet for lithographic printing |
| JP2005154979A (en) * | 2003-11-28 | 2005-06-16 | Daio Paper Corp | Neutral paper for joining metal |
| JP6160516B2 (en) * | 2013-12-11 | 2017-07-12 | 王子ホールディングス株式会社 | Protective sheet for electrophotographic photoreceptor |
| JP2017081578A (en) * | 2015-10-23 | 2017-05-18 | 王子ホールディングス株式会社 | Interleaving paper for glass plate |
| CN111893800B (en) * | 2020-06-17 | 2022-07-26 | 宁波宝新不锈钢有限公司 | Preparation method of stainless steel packing paper beneficial to flattening elongation percentage rolling |
-
1994
- 1994-01-21 JP JP00495094A patent/JP3264073B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07216794A (en) | 1995-08-15 |
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